We told the fab the missing annular rings were intentional. They weren't.
Part two. The fab asked about one thing before building. We said it was deliberate. It was a parser bug, and it is why only the through-hole joints failed.
· 7 min read
pcb
3 posts
Custom PCB fabrication: three of five boards arrived dead
Three of five assembled boards arrived dead. The defect wasn't ours, and proving that took test points we had added a month earlier.
· 6 min read
From jumper wires to a custom PCB: building the HC-01 humidor controller
An ESP32 rat's nest became a four-revision custom board. The most expensive mistake was a sensor we never actually measured.
· 4 min read